.kb-adv-btn {
    height: 2.05rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0 0.72rem;
    border-radius: 8px;
    border: 1px solid var(--page-primary-border);
    background: #fff;
    color: var(--page-primary);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.kb-adv-btn:hover {
    background: var(--page-primary-soft);
}

.kb-adv-icon {
    width: 1rem;
    height: 1rem;
    flex: 0 0 auto;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linejoin: round;
}

.kb-adv-label {
    line-height: 1;
}

.kb-adv-btn.active {
    background: var(--page-primary);
    color: #fff;
}

.kb-adv-count {
    min-width: 1.15rem;
    height: 1.15rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--page-primary-soft);
    color: var(--page-primary);
    font-size: 0.68rem;
    line-height: 1;
}

.kb-adv-btn.active .kb-adv-count {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

.kb-adv-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.kb-adv-modal[hidden] {
    display: none !important;
}

.kb-adv-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15,23,42,0.42);
    backdrop-filter: blur(4px);
}

.kb-adv-panel {
    position: relative;
    width: min(720px, calc(100vw - 2rem));
    max-height: min(84vh, 760px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: 16px;
    border: 1px solid var(--page-border);
    background: #fff;
    box-shadow: 0 24px 60px rgba(15,23,42,0.18);
}

.kb-adv-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.1rem 0.75rem;
    border-bottom: 1px solid var(--page-border-soft);
    background: #f8fafc;
}

.kb-adv-title {
    margin: 0;
    color: var(--page-text);
    font-size: 1rem;
    font-weight: 800;
}

.kb-adv-sub {
    margin-top: 0.18rem;
    color: var(--page-text-muted);
    font-size: 0.78rem;
    line-height: 1.5;
}

.kb-adv-close {
    width: 32px;
    height: 32px;
    flex: 0 0 auto;
    border-radius: 50%;
    border: 1px solid var(--page-border);
    background: #fff;
    color: var(--page-text-muted);
    font-size: 1.1rem;
    cursor: pointer;
}

.kb-adv-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 1rem 1.1rem;
}

.kb-adv-group {
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--page-border-soft);
}

.kb-adv-group:first-child {
    padding-top: 0;
}

.kb-adv-group:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.kb-adv-group-title {
    margin: 0 0 0.55rem;
    color: var(--page-text);
    font-size: 0.86rem;
    font-weight: 800;
}

.kb-adv-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.42rem;
}

.kb-adv-option {
    min-height: 1.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.22rem 0.6rem;
    border-radius: 999px;
    border: 1px solid var(--page-border);
    background: #fff;
    color: var(--page-text-muted);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
}

.kb-adv-option:hover {
    border-color: var(--page-primary-border);
    color: var(--page-primary);
}

.kb-adv-option.active {
    background: var(--page-primary-soft);
    border-color: var(--page-primary-border);
    color: var(--page-primary);
}

.kb-adv-option-count {
    color: #94a3b8;
    font-size: 0.68rem;
    font-weight: 700;
}

.kb-adv-empty {
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid var(--page-border);
    background: #f8fafc;
    color: var(--page-text-muted);
    text-align: center;
    font-size: 0.86rem;
}

.kb-adv-foot {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.55rem;
    padding: 0.85rem 1.1rem;
    border-top: 1px solid var(--page-border-soft);
    background: #fff;
}

.kb-adv-action {
    height: 2.1rem;
    padding: 0 0.85rem;
    border-radius: 8px;
    border: 1px solid var(--page-primary-border);
    background: #fff;
    color: var(--page-primary);
    font-size: 0.8rem;
    font-weight: 800;
    cursor: pointer;
}

.kb-adv-action.primary {
    background: var(--page-primary);
    color: #fff;
}

@media (max-width: 600px) {
    .kb-adv-modal {
        align-items: flex-end;
        padding: 0;
    }

    .kb-adv-panel {
        width: 100%;
        max-height: 88vh;
        border-radius: 16px 16px 0 0;
    }

    .kb-adv-foot {
        justify-content: stretch;
    }

    .kb-adv-action {
        flex: 1;
    }
}